| Company | Timeline | Status | |
Roughton (Holdings) Limited Director • Civil Engineer | 27 Jul 1995←4 Years→9 May 2000 | Dissolved | |
| Roughton International Limited Director • Consulting Engineer | 10 Aug 1991←8 Years→9 May 2000 | Active | |
| Roughton & Partners Limited Director • Consulting Engineer | 1 Jan 1970←30 Years→9 May 2000 | Active | |
